TWI522857B - Touch display panel, touch display device and display device - Google Patents

Description

Touch display panel, touch display device and display device

The present invention relates to a touch display panel, a touch display device, and a display device, and more particularly to a touch display panel, a touch display device, and a display device that are light and thin and mechanically strong.

With the continuous advancement of technology, various information devices are constantly being introduced, such as smart phones, tablets, ultra-thin notebooks or satellite navigation. In addition to keyboard or mouse input or manipulation, the use of touch technology to manipulate information devices is a fairly intuitive and popular way to manipulate.

The function of having touch in the display device has been developed in the industry for a period of time, and the glass substrate used has a tendency to become thinner and thinner, whether it is a display panel or a touch panel. Therefore, how to produce a touch display panel, a touch display device and a display device that are thin and conform to the strength requirements of the mechanism under limited cost control has become a challenge for various challenges.

In view of the above problems, an object of the present invention is to provide a touch display panel, a touch display device, and a display device that can simultaneously meet the requirements of lightness and thinness and mechanical strength.

To achieve the above objective, a touch display panel according to the present invention includes a display panel, a touch panel, an optical film, and an adhesive layer. The display panel has a first substrate and a second substrate, and the first substrate and the second substrate are oppositely disposed along a first direction. The touch panel is disposed on the display panel in a first direction. The optical film is disposed between the second substrate and the touch panel in the first direction. The adhesive layer is disposed on the outer side of the optical film, and the second substrate and the touch panel are adhered.

In one embodiment, the optical film is a polarizer.

In an embodiment, the distance between the optical film and the touch panel in the first direction is greater than or equal to 0 mm and less than or equal to 0.3 mm.

In one embodiment, the thickness of the optical film in the first direction is greater than or equal to 0.1 mm and less than or equal to 0.2 mm.

In one embodiment, the thickness of the adhesive layer in the first direction is between 1 and 1.5 times the thickness of the optical film.

In an embodiment, the outer edge of the adhesive layer and the outer edge of the second substrate are coplanar in the first direction.

In an embodiment, the width of the adhesive layer in a second direction perpendicular to the first direction is greater than or equal to 0.7 mm and less than or equal to 0.9 mm.

In one embodiment, the adhesion of the adhesive layer is between 5 and 20 Newtons per centimeter.

In one embodiment, the distance between the outer edge of the optical film and the inner edge of the adhesive layer in the second direction is greater than or equal to 0 mm and less than or equal to 0.1 mm.

In one embodiment, the distance between the outer edge of the touch panel and the outer edge of the first substrate in the second direction is greater than or equal to 1 mm and less than or equal to 3 mm.

In an embodiment, the distance between the outer edge of the touch panel and the outer edge of the second substrate in the second direction is greater than or equal to 1 mm and less than or equal to 3 mm.

In one embodiment, the distance between the outer edge of the touch panel and the outer edge of the optical film in the second direction is greater than or equal to 2 mm and less than or equal to 5 mm.

In an embodiment, the outer edge of the adhesive layer protrudes beyond the second substrate, and the protruding portion has an arc shape.

In one embodiment, the adhesive layer includes a plurality of adhesive members, and the ends of the adhesive members have a convex portion and a concave portion, wherein the convex portion of one of the adhesive members and the concave portion of the adjacent other adhesive member have a complementary structure.

In an embodiment, the adhesive members are respectively black double-sided adhesive materials.

In an embodiment, the touch panel has a substrate, and the substrate is a cover.

To achieve the above objective, a touch display device according to the present invention includes a touch display panel and a backlight module. The touch display panel comprises a display panel, a touch panel, an optical film and an adhesive layer. The display panel has a first substrate and a second substrate, and the first substrate and the second substrate are oppositely disposed along a first direction. The touch panel is disposed on the display in the first direction Above the panel. The optical film is disposed between the second substrate and the touch panel in the first direction. The adhesive layer is disposed on the outer side of the optical film, and the second substrate and the touch panel are adhered. The backlight module is disposed in a first direction on a side of the display panel away from the touch panel.

In one embodiment, the touch display device further includes a control circuit board electrically connected to the display panel and the touch panel.

To achieve the above object, a display device according to the present invention includes a display panel, a cover, an optical film, and an adhesive layer. The display panel has a first substrate and a second substrate, and the first substrate and the second substrate are oppositely disposed along a first direction. The cover plate is disposed above the display panel in the first direction. The optical film is disposed between the second substrate and the cover plate in the first direction. The adhesive layer is disposed on the outer side of the optical film, and the second substrate and the cover plate are adhered.

In an embodiment, the display device further includes a touch component disposed on the display panel.

According to the above, in the touch display panel, the touch display device and the display device of the present invention, the touch panel is disposed on the display panel in a first direction, and the optical film is disposed on the second substrate along the first direction. Between the touch panels, the adhesive layer is disposed on the outer side of the optical film, and the second substrate and the touch panel are adhered. Alternatively, the cover of the display device is disposed on the display panel in a first direction, the optical film is disposed between the second substrate and the cover plate in the first direction, and the adhesive layer is disposed on the outer side of the optical film, and is adhered to Two substrates and a cover plate. Therefore, the touch display panel, the touch display device, and the display device of the present invention can simultaneously meet the requirements of lightness and thinness and mechanical strength.

1‧‧‧Touch display panel

11‧‧‧ display panel

111‧‧‧First substrate

112‧‧‧second substrate

12‧‧‧Touch panel

121‧‧‧ side

122‧‧‧ touch surface

13, 15, 23, 24, 25‧ ‧ optical diaphragm

14‧‧‧Adhesive layer

141~144‧‧‧Adhesive parts

1411, 1421‧‧ ‧ convex

1412, 1422‧‧‧ recess

16‧‧‧ Cover

2‧‧‧Backlight module

21‧‧‧reflector

22‧‧‧Light guide plate

3‧‧‧Touch display device

31‧‧‧ plastic frame

311, 312‧‧ ‧ bearing surface

32‧‧‧ Backboard

33‧‧‧Front frame

331‧‧‧Shading Department

341, 342‧‧‧ cushioning material

35‧‧‧Control circuit board

351‧‧‧Drive circuit board

4‧‧‧ display device

C1, C2‧‧‧ connection terminal

D1‧‧‧ first direction

D2‧‧‧ second direction

F‧‧‧Circuit connection board

FIG. 1 is a schematic diagram of a touch display panel according to a preferred embodiment of the present invention.

2 is a top plan view of an adhesive layer and an optical film of the touch display panel of FIG. 1 .

3 is a perspective view of a touch display device according to a preferred embodiment of the present invention.

4 is another perspective view of a touch display device according to a preferred embodiment of the present invention.

FIG. 5 is a schematic diagram of a display device according to a preferred embodiment of the present invention.

Hereinafter, a touch display according to a preferred embodiment of the present invention will be described with reference to related drawings. Panels, touch display devices, and display devices, wherein like elements will be described with the same reference numerals.

The illustrations of all the embodiments of the present invention are merely schematic and do not represent true dimensions and proportions.

Please refer to FIG. 1 , which is a schematic diagram of a touch display panel 1 according to a preferred embodiment of the present invention. It is to be noted that, as shown in FIG. 1 , the outer side of a component is hereinafter referred to as a lateral direction, and the component is biased toward the outside of the touch display panel 1 and is referred to as an outer side. One side of the center of the touch surface 122 of one of the display panels 1 is referred to as an inner side.

The touch display panel 1 includes a display panel 11 , a touch panel 12 , an optical film 13 , and an adhesive layer 14 .

The display panel 11 has a first substrate 111 and a second substrate 112. The first substrate 111 and the second substrate 112 are oppositely disposed along a first direction D1. Here, the first direction D1 is the direction of the touch surface of the vertical touch panel 12 and is perpendicular to a second direction D2. The areas of the first substrate 111 and the second substrate 112 of the embodiment are substantially equal, and the corresponding sides thereof are arranged in a line.

The display panel 11 can be a liquid crystal display panel (LCD) or an organic light emitting diode (OLED) display panel. Herein, the display panel 11 is exemplified by a liquid crystal display panel. The first substrate 111 , the second substrate 112 , and the touch panel 12 of the display panel 11 are made of a light transmissive material, and are, for example, a glass substrate, a quartz substrate, or a plastic substrate, and are not limited thereto. In addition, in the embodiment, the first substrate 111 is a thin film transistor substrate, and the second substrate 112 is a color filter substrate. However, in other embodiments, the color filter substrate is used. The black matrix may be disposed on the thin film transistor substrate such that the first substrate 111 becomes a BOA (BM on array) substrate, or the filter layer is disposed on the thin film transistor substrate, so that the first substrate 111 Become a COA (color filter on array) substrate. There are no restrictions on this. In addition, the display panel 11 may further have a liquid crystal layer (not shown), and the liquid crystal layer is sandwiched between the first substrate 111 and the second substrate 112 along the first direction D1.

The touch panel 12 is disposed above the display panel 11 in the first direction D1. In this embodiment, one side 121 of the touch panel 12 protrudes from a corresponding side of the second substrate 112 . The outer edge (outer edge, ie, the side 121) of the touch panel 12 is outside the first substrate 111. The distance of the edge in the second direction D2 may be greater than or equal to 1 mm and less than or equal to 3 mm, and the distance between the outer edge of the touch panel 12 and the outer edge of the second substrate 112 in the second direction D2 may be greater than or equal to 1 mm, and Less than or equal to 3 mm. In addition, the distance between the outer edge of the touch panel 12 and the outer edge of the optical film 13 in the second direction D2 may be greater than or equal to 2 mm and less than or equal to 5 mm. Here, the distance between the outer edge of the touch panel 12 and the outer edge of the optical film 13, the outer edge of the first substrate 111, and the outer edge of the second substrate 112 in the second direction D2 is 2 mm. The touch panel 12 can have a substrate and a touch electrode (not shown), and the touch electrodes are disposed on the substrate. In an embodiment, the substrate can be a cover glass, such that the touch panel 12 is a one-piece glass touch panel (One Glass Solution, OGS). However, in another embodiment, the touch electrode may be disposed on the substrate and then adhered to a cover plate, which is not particularly limited in the present invention.

The optical film 13 is disposed between the second substrate 112 and the touch panel 12 along the first direction D1. The optical film 13 is an upper polarizer and is interposed between the second substrate 112 and the touch panel 12 . The thickness of the optical film 13 in the first direction D1 may be greater than or equal to 0.1 mm and less than or equal to 0.2 mm. In addition, the distance between the optical film 13 and the touch panel 12 in the first direction D1 may be greater than or equal to 0 millimeters (mm) and less than or equal to 0.3 millimeters. Preferably, the optical film 13 is in direct contact with the touch panel 12 with a distance of 0 mm therebetween, thereby not only making the touch display panel 1 light and thin, but also allowing the touch panel 12 to be The amount of deformation during the pressing process is small, and the display panel 11 can also carry the touch panel 12 to some extent, so that the touch panel 12 can meet the requirements of mechanical strength without further mechanical strengthening treatment.

The touch display panel 1 of the present embodiment may further include another optical film 15 which may be a lower polarizer and disposed along the first direction D1 on one side of the first substrate 111 away from the second substrate 112. However, in other embodiments, if the display panel 11 is an organic light emitting diode display panel, only one optical film 13 is provided, and the optical film 13 is, for example but not limited to, a circle of 1/4 λ. A polarizing plate, a polarizing plate or an anti-reflective film, or a combination thereof.

The adhesive layer 14 is disposed on the outer side of the optical film 13 and directly contacts the second substrate 112 and the touch panel 12 in the first direction D1 to adhere the second substrate 112 and the touch panel 12 . The adhesive layer 14 is located on the outer periphery of the optical film 13 and sandwiched between the second substrate 112 and the touch panel 12 , and the adhesive layer 14 directly contacts the second substrate 112 and the touch panel 12 . In the prior art, an adhesive layer is disposed between the touch panel and the optical film (the upper polarizer), thereby fixing the touch panel and the optical film, but the touch panel and the optical film are The structure of providing an adhesive layer between them will increase the thickness of the overall touch display panel, and does not meet the requirements of thinning and thinning. Therefore, as shown in FIG. 1 , the touch panel 12 and the optical film can be formed by disposing the adhesive layer 14 on the outer side of the optical film 13 and directly contacting the second substrate 112 and the touch panel 12 along the first direction D1. The gap of the sheet 13 is 0, so that the overall thickness of the touch display panel 1 is lowered to meet the requirements of lightness and mechanical strength.

The distance between the outer edge of the optical film 13 and the inner edge (inner side edge) of the adhesive layer 14 in the second direction D2 may be greater than or equal to 0 mm and less than or equal to 0.1 mm (0 mm means that the outer edge of the optical film 13 is adhered to The inner edge of layer 14 is in contact with a pitch equal to 0). Here, the distance between the outer edge of the optical film 13 and the inner edge of the adhesive layer 14 in the second direction D2 is 0 mm. Further, the thickness of the adhesive layer 14 in the first direction D1 is between 1 and 1.5 times the thickness of the optical film 13. Here, the thickness of the adhesive layer 14 in the first direction D1 is the same as that of the optical film 13. Further, the width of the adhesive layer 14 in the second direction D2 may be greater than or equal to 0.7 mm and less than or equal to 0.9 mm.

The adhesive layer 14 can be viscous and elastic for a black double-sided adhesive (such as a double-sided adhesive), and its adhesion can be between 5 and 20 Newtons/cm (N/cm). In addition, the outer edge of the adhesive layer 14 and the outer edge of the second substrate 112 are coplanar in the first direction D1. Specifically, the outer edge of the adhesive layer 14 and the outer edge of the second substrate 112 are disposed in a line in the second direction D2. In another embodiment, the adhesive layer 14 is elastic, so that when the touch panel 12 is pressed between the touch panel 12 and the display panel 11 , the outer edge of the adhesive layer 14 protrudes beyond the second substrate 112 . And the protruding portion may be arcuate.

Please refer to FIG. 2 , which is a schematic top view of the adhesive layer 14 and the optical film 13 of the touch display panel 1 of FIG. 1 . Here, in order to clearly illustrate the relative relationship between the adhesive layer 14 and the optical film 13, FIG. 2 only shows the adhesive layer 14 and the optical film 13, and the other elements of the touch display panel 1 are not shown.

In the present embodiment, the adhesive layer 14 includes a plurality of adhesive members, and here, four adhesive members 141, 142, 143, and 144 are exemplified. The adhesive members 141, 142, 143, and 144 are disposed on the outer peripheral edge of the optical film 13, and directly contact the optical film 13 respectively. The adhesive members 141, 142, 143, and 144 may be dark double-sided adhesive materials (for example, black double-sided adhesive tape). each The end of the adhesive member may have a convex portion and a concave portion, and the convex portion of one of the adhesive members is complementary to the concave portion of the adjacent other adhesive member. In other words, the convex portions of the corresponding ends of the two adjacent adhesive members are disposed corresponding to the concave portions. Here, the adhesive member 141, 142 is taken as an example. The end of the adhesive member 141 has a convex portion 1411 and a concave portion 1412. The end of the adhesive member 142 also has a convex portion 1421 and a concave portion 1422, and the concave portion of the adhesive member 141. 1412 is disposed corresponding to the convex portion 1421 of the adhesive member 142, and is complementary to each other. The adhesive layer 14 is formed by the complementary structure of the adhesive members 141, 142, 143, 144 such that the adhesive layer 14 is located on the outer peripheral edge of the optical film 13 and directly contacts the optical film 13.

In addition, please refer to FIG. 3 , which is a perspective view of a touch display device 3 according to a preferred embodiment of the present invention.

The touch display device 3 includes a touch display panel 1 and a backlight module 2 . Herein, the touch display panel 1 has been described in detail above and will not be described again. The backlight module 2 is disposed on a side of the display panel 11 away from the touch panel 12 along the first direction D1. Here, the backlight module 2 is disposed opposite to the display panel 11, and emits light to the display panel 11, so that the display panel 11 can display an image. In this embodiment, the backlight module 2 includes a reflective plate 21, a light guide plate 22, and a plurality of optical films 23, 24, and 25. The optical films 23, 24, 25 are, for example but not limited to, light collecting sheets or diffusing sheets. The backlight module 2 is a well-known technology, and those skilled in the art can understand the relative arrangement relationship and its function, and will not be described herein.

In addition, the touch display device 3 further includes a plastic frame 31 and a back plate 32. The plastic frame 31 is configured to carry the display panel 11 and the touch panel 12 so that the display panel 11 can be disposed opposite to the backlight module 2 along the first direction D1, and the touch panel 12 can be opposite to the display panel 11 along the first direction D1. And set. The plastic frame 31 is disposed adjacent to the backlight module 2, and the touch display panel 1 is disposed on the plastic frame 31 to carry the touch panel 12 by the bearing surface 311 of the plastic frame 31, and by another The carrying surface 312 carries the first substrate 111 and the two substrates 112. In addition, a buffer material 341 is disposed on the bearing surface 311 of the plastic frame 31 to provide buffer between the touch panel 12 and the plastic frame 31, and another buffer material 342 is disposed on the other bearing surface 312 of the plastic frame 31. A buffer between the first substrate 111 and the bezel 31 is provided. The plastic frame 31 has different shapes corresponding to the protrusion of the touch panel 12 to limit the horizontal movement between the touch panel 12 and the display panel 11 respectively. In addition, the backplane 32 is configured to accommodate components such as the touch display panel 1, the backlight module 2, and the plastic frame 31, and provides collision, Protection from electromagnetic waves or electric shocks. Here, the material of the back plate 32 may be plastic, metal or alloy.

In addition, the touch display device 3 further includes a front frame member 33. The front frame member 33 is, for example but not limited to, a light shielding tape, and is disposed on the outer periphery of the touch panel 12, and has a shielding portion 331 located on the touch panel. Above 12, it blocks the diffused light and has a fixed effect. The front frame member 33 is disposed on the back plate 32 in an adhesive manner, and covers a portion of the touch panel 12, the plastic frame 31, the side surface of the back plate 32, and a portion of the lower surface.

In addition, please refer to FIG. 4 , which is another perspective view of a touch display device 3 according to a preferred embodiment of the present invention. Here, only some of the components of the touch display device 3 are displayed.

As shown in FIG. 4 , the touch display device 3 further includes a control circuit board 35 , and the control circuit board 35 is electrically connected to the display panel 11 and the touch panel 12 . Here, the touch panel 12 and the display panel 11 share one control circuit board 35. In the embodiment, the control circuit board 35 has a driving control circuit (such as a scan driving circuit, a data driving circuit, or a timing control circuit) of the display panel 11, and has a driving circuit board 351 for driving the touch panel 12. . The driving circuit board 351 is electrically connected to the touch panel 12 by the lower surface of the touch panel 12 through the circuit connecting board F and the two connecting terminals C1 and C2 to drive and control the operation of the touch panel 12 . The circuit connection board F is, for example but not limited to, a flexible printed circuit (FPC) board or a soft and hard board. In addition, the driving circuit board 351 is fitted into a recess of the control circuit board 35, or the driving circuit board 351 can be screwed into the recess of the control circuit board 35, so that the driving control display panel 11 is The circuits of the touch panel 12 are integrated on the same piece of control circuit board 35.

In addition, please refer to FIG. 5, which is a schematic diagram of a display device 4 according to a preferred embodiment of the present invention.

The display device 4 includes a display panel 11, a cover plate 16, an optical film 13, and an adhesive layer 14. The technical features of the display panel 11 including the first substrate 111 and the second substrate 112 have been described in detail above and will not be described again.

The cover plate 16 is, for example but not limited to, a light transmissive glass substrate or a plastic substrate, and the optical film 13 is disposed between the second substrate 112 and the cover plate 16 in the first direction D1. The relative relationship between the optical film 13 and the second substrate 112, the cover 16 and the adhesive layer 14 can refer to the optical film 13 and the second substrate 112 of the touch display panel 1 , the touch panel 12 and the adhesive layer. The relative relationship of 14 is not repeated here.

The adhesive layer 14 is disposed on the outer side of the optical film 13, and directly contacts the second substrate 112 and the cover 16 in the first direction D1 to adhere the second substrate 112 and the cover 16. Here, the technical features of the adhesive layer 14 have also been described in detail above and will not be described.

In addition, in an embodiment, the display device 4 further includes a touch component (not shown), so that the display device 4 becomes an in-cell touch display device. The touch component is, for example, a touch electrode layer, and is provided with the display panel 11 and can be located, for example, on the first substrate 111 or the second substrate 112.

In summary, in the touch display panel, the touch display device, and the display device of the present invention, the touch panel is disposed on the display panel in a first direction, and the optical film is disposed on the second substrate along the first direction. Between the touch panels, the adhesive layer is disposed on the outer side of the optical film, and the second substrate and the touch panel are adhered. Alternatively, the cover of the display device is disposed on the display panel in a first direction, the optical film is disposed between the second substrate and the cover plate in the first direction, and the adhesive layer is disposed on the outer side of the optical film, and is adhered to Two substrates and a cover plate. Therefore, the touch display panel, the touch display device, and the display device of the present invention can simultaneously meet the requirements of lightness and thinness and mechanical strength.

The above is intended to be illustrative only and not limiting. Any equivalent modifications or alterations to the spirit and scope of the invention are intended to be included in the scope of the appended claims.

1‧‧‧Touch display panel

11‧‧‧ display panel

111‧‧‧First substrate

112‧‧‧second substrate

12‧‧‧Touch panel

121‧‧‧ side

122‧‧‧ touch surface

13, 15‧‧‧ optical diaphragm

14‧‧‧Adhesive layer

D1‧‧‧ first direction

D2‧‧‧ second direction

Claims (19)

A touch display panel includes: a display panel having a first substrate and a second substrate, wherein the first substrate and the second substrate are disposed opposite each other in a first direction; and a touch panel along the first direction An optical film disposed along the first direction between the second substrate and the touch panel; and an adhesive layer disposed on the outer side of the optical film and adhered to the first And a touch panel, wherein a width of the adhesive layer in a second direction perpendicular to the first direction is greater than or equal to 0.7 mm and less than or equal to 0.9 mm. The touch display panel of claim 1, wherein the optical film is a polarizer. The touch display panel of claim 1, wherein a distance between the optical film and the touch panel in the first direction is greater than or equal to 0 mm and less than or equal to 0.3 mm. The touch display panel of claim 1, wherein the optical film has a thickness in the first direction of 0.1 mm or more and 0.2 mm or less. The touch display panel of claim 1, wherein the adhesive layer has a thickness in the first direction between 1 and 1.5 times the thickness of the optical film. The touch display panel of claim 1, wherein the outer edge of the adhesive layer and the outer edge of the second substrate are coplanar along the first direction. The touch display panel of claim 1, wherein the adhesive layer has an adhesion of between 5 and 20 Newtons/cm. The touch display panel of claim 1, wherein a distance between an outer edge of the optical film and an inner edge of the adhesive layer in the second direction is greater than or equal to 0 mm and less than or equal to 0.1 mm. The touch display panel of claim 1, wherein a distance between the outer edge of the touch panel and the outer edge of the first substrate in the second direction is greater than or equal to 1 mm and less than or equal to 3 mm. The touch display panel of claim 1, wherein the outer edge of the touch panel The distance from the outer edge of the second substrate in the second direction is greater than or equal to 1 mm and less than or equal to 3 mm. The touch display panel of claim 1, wherein a distance between an outer edge of the touch panel and an outer edge of the optical film in the second direction is greater than or equal to 2 mm and less than or equal to 5 mm. The touch display panel of claim 1, wherein the outer edge of the adhesive layer protrudes beyond the second substrate, and the protruding portion has an arc shape. The touch display panel of claim 1, wherein the adhesive layer comprises a plurality of adhesive members, and each of the adhesive members has a convex portion and a concave portion, wherein one of the adhesive members is adjacent to the convex portion The recess of the other adhesive member is a complementary structure. The touch display panel of claim 13, wherein the adhesive members are black double-sided adhesive materials. The touch display panel of claim 1, wherein the touch panel has a substrate, and the substrate is a cover. A touch display device includes: a touch display panel, comprising: a display panel having a first substrate and a second substrate, wherein the first substrate and the second substrate are disposed opposite each other in a first direction; The control panel is disposed on the display panel along the first direction; an optical film disposed along the first direction between the second substrate and the touch panel; and an adhesive layer disposed on the optical film The first side of the film is attached to the second substrate and the touch panel; and a backlight module is disposed along the first direction of the display panel away from the side of the touch panel, wherein the adhesive layer is perpendicular to the first The width of one of the directions in the second direction is greater than or equal to 0.7 mm and less than or equal to 0.9 mm. The touch display device of claim 16, further comprising: a control circuit board electrically connected to the display panel and the touch panel. A display device includes: a display panel having a first substrate and a second substrate, the first substrate and the second substrate are disposed opposite each other in a first direction; a cover plate disposed along the first direction An optical film disposed along the first direction between the second substrate and the cover; and an adhesive layer disposed on the outer side of the optical film and adhered to the second substrate a cover plate, wherein a width of the adhesive layer in a second direction perpendicular to the first direction is greater than or equal to 0.7 mm and less than or equal to 0.9 mm. The display device of claim 18, further comprising: a touch component disposed on the display panel.